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Long-Term Debt and Credit Agreements - Schedule of debt ratios (Details) (Unsecured Senior Notes [Member])
Dec. 31, 2014
Unsecured Senior Notes [Member]
  
Debt Instrument [Line Items]  
Debt Instrument, Interest Coverage Ratio, Actual 10.14mye_DebtInstrumentInterestCoverageRatioActual
/ us-gaap_LongtermDebtTypeAxis
= mye_RevolvingCreditFacilityAndSeniorNotesMember
Debt Instrument, Covenant, Interest Coverage Ratio Required, Minimum 3.00mye_DebtInstrumentCovenantInterestCoverageRatioRequiredMinimum
/ us-gaap_LongtermDebtTypeAxis
= mye_RevolvingCreditFacilityAndSeniorNotesMember
Debt Instrument, Covenant, Leverage Ratio Required, Minimum 3.25mye_DebtInstrumentCovenantLeverageRatioRequiredMinimum
/ us-gaap_LongtermDebtTypeAxis
= mye_RevolvingCreditFacilityAndSeniorNotesMember
Debt Instrument, Leverage Ratio, Actual 2.78mye_DebtInstrumentLeverageRatioActual
/ us-gaap_LongtermDebtTypeAxis
= mye_RevolvingCreditFacilityAndSeniorNotesMember